Which method is often used in the disposal of medical waste

The carbon cycle is best defined as a process in which a. carbon changes from inorganic forms to organic forms and back b. carbon is changed into other elements such as oxygen or nitrogen c. carbon is continually created from the sun’s energy by plants d. carbon is consumed and regenerated from other elements such as oxygen and nitrogen

In general, are there any major differences that you can see? explain

Hershey and chase confirmed that dna, not protein, was the genetic material. how do the results of their two experiments support this conclusion?